Hi Eric, I have migrated successfully from Centos 6 to Centos 7 with the following link
http://www.qmailtoaster.org/migrate.html After done the migration i tried to install roundcube email with the following link. http://www.qmailtoaster.org/roundcube.html After done the roundcube email is working fine but my website is showing below message "Your PHP installation appears to be missing the MySQL extension which is required by WordPress." I have tried other source but no luck to fix that. I am unable to install mysql.so extension and unable to add in php.ini. Could you help me to fix this issue. My website is running with wordpress on centos 6 without any issue. Another 25 port outgoing is not working from outlook, only 587 TLS working fine. Both 25 and 587 is working fine on centos 6 Appreciate anyone facing the same issue and help. -- *Regards,Manikandan.C*